A method and system is provided whereby after specialized original native format files have been signatured and “wrapped” into industry standard byte stream text files for transmission over the Internet (or for use of other computer platforms), then subsequently, said wrapped files with signature can be accessed by the proprietary computer platform which will then use the signature to verify the integrity of the files and will unwrap or re-create these files back into the original specialized native format for use by the proprietary computer platform.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, initiated by a source-user, for reconstituting (unwrapping) specialized original native data files which had been wrapped into an industry byte stream data file, comprising the steps of: (a) entering an unwrap command unto a computer platform; (b) accessing a wrapped file from a CD-ROM (Wrapped File CD, 21 ), or a wrapped file imported from an open network, said wrapped file consisting of a byte stream data file (with digital signature) to be processed for conversion to an original specialized native data file; (c) verifying said signature to insure the integrity of the data file; (d) executing, when said signature is properly verified, programmatic interface means which converts said industry-standard byte stream text files into said specialized original native files; (e) placing said unwrapped file onto a storage media.
2. A method for verifying and unwrapping a signatured wrapped file comprising the steps of: (a) establishing DSA KEYSFILE which holds parameters of KeyID, SSR, P, Q, G and a system public key; (b) establishing signatured words R and S for the file which is wrapped and exists in industry-standard byte stream text format file; (c) utilizing an Unwrap operation which accesses said parameters of said DSA keys files and which accesses said signatured file with said R and S words; (d) executing an Unwrap operation to the parameters and signatured file in order to develop the reconstituted specialized original native file.
3. In a network having a first computer platform ( 14 ) which utilizes an specialized original native format file and a second platform ( 30 ) which uses an industry-standard byte stream text data format file with digital signature, (wrapped file), a method for converting and reconstituting said industry-standard byte stream text data file (wrapped file) into a specialized original native file (unwrapped) useable by said first computer platform comprising the steps of: (a) accessing said industry-standard byte stream data file 21 with digital signature from an open network ( 40 ) by transmission to said second platform ( 30 ); (b) storing, by said second platform ( 30 ) of said accessed industry-standard byte stream data file and signature, ( 24 , Disk C); (c) receiving and processing by said first platform ( 14 ) of said byte stream data file (wrapped file) including: (c1) verifying the signature ( 36 , 13 , 36 y ) of said wrapped data file in order to validate the integrity of the transmitted file; (c2) processing said byte stream data file (wrapped file) by said first computer platform ( 14 ) using its own operating system ( 10 ) and programs to convert said wrapped industry-standard byte stream data file into an unwrapped specialized original native data file; (d) placing said unwrapped storage file ( 21 d ) after verification onto a storage medium ( 20 ) usable by said first computer platform ( 14 ).
4. The method of claim 3 wherein step (c1) includes the step of: (c1a) calling a first program routine ( 36 ) (MCP_FILEWRAPPER) which utilizes a special verification routine (DSAVERIFY) from a Signature Support Library ( 13 ) to validate the integrity of the transmitted byte stream data file.
5. The method of claim 3 wherein step (c 2 ) includes the step of: (c2a) executing a second program routine ( 38 ) (MCP_WRAPPER), after signature verification, to convert (unwrap) said byte stream data file into said original specialized native data file.
6. In a computer platform operating on a specialized original native format data file and Disk File Header, a method for converting an industry-standard byte stream data file with signature back to said original specialized native format data file comprising the steps of: (a) initiating an unwrap operation on said byte stream data file with digital signature including entering a public key by a user; (b) executing a MCP_FILEWRAPPER routine ( 36 ) to verify the user specified public key and into verify the file's signature; (c) calling a MCP_WRAPPER program ( 38 ) to unwrap the verified file in order to reconstitute the accessed byte stream data file and signature into the original specialized native format file.
7. The method of claim 6 wherein step (b) for signature verification includes the steps of: (bi) checking for validity of the wrapped file; (bii) checking to see the file has a digital signature; (biii) calling a Signature Support Library ( 13 ) to use a verification routine which then reads the digital signature; (biv) verifying that the signature is the proper value.
8. The method of claim 7 where step (biii) includes the steps of: (a) obtaining the System Software Release (SSR) level of the wrapped file; (b) calling the routine GET_DSA_PQGKEY in order to obtain the prime numbers P,Q,G and the system public key which is based on the System Software Release (SSR) level; (c) reading the data from the signed wrapped file to a local buffer and calling the program DSAVERIFY to develop signature words (R,S) where R and S are a series of digital words.
9. In a computer platform utilizing a Signature Support Library, anew operating on a specialized original native format data file and disk File Header (DFH), a system for receiving and utilizing an industry-standard byte stream data file having a digital signature in order to decode and reconstitute said byte stream data file into said specialized original native format data file after execution of a signature integrity verification program, said system comprising: (a) means for accessing said industry-standard byte stream data file and signature; (b) means to verify said digital signature portion of said reconstituted byte stream files in order to verify the integrity of said files; (c) program means to reconvert said accessed byte stream data file into a resultant file or said specialized original native files after signature verification; (d) means to place said resultant verified file on a storage medium for use by said computer platform.
10. The system of claim 9 wherein said means to verify said digital signal includes: (a) first program means (MCP_FILEWRAPPER) to access said Signature Support Library; (b) said Signature Support Library for calling a verification routine (DSAVERIFY) which validates said signature; (c) second program means (MCP_WRAPPER) for converting, after signature verification, said byte steam data file into a verified specialized original native file.
11. In a first computer platform operating on a specialized original native formatted file, a system for verifying and unwrapping a wrapped byte stream data file into said original specialized native formatted file, comprising: (a) means to access a signatured byte stream text data file; (b) means to access a Digital Signal Algorithm (DSA) Keysfile holding a set of specialized parameters and system public key; (c) means to combine said DSA Keysfile with said signatured byte stream text data file to verify said data file's integrity; (d) means to execute an Unwrap operation on said verified data file in order to reconstruct said specialized original native file after verification of said signature.
12. The system of claim 11 where said set of specialized parameters include: (i) a KEYID; (ii) a System Software Release level (SSR); (iii) a random group of prime numbers designated P,Q,G.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 29, 1998
March 12, 2002
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